Your files stay on your Mac.
Convertessa reads your Rich Text files and outputs Textile—a lightweight markup syntax used in wikis, project trackers, and static-site generators. Headings, bold, italic, and list structures are translated to their Textile equivalents. Your files never leave your Mac.
Drag one RTF file or an entire folder into Convertessa. Batch mode processes every RTF in the folder in a single pass.
Pick Textile from the output format list. Convertessa maps RTF formatting—headings, bold, italic, links, and lists—to their Textile equivalents.
Click Convert. Textile files are written alongside your originals. No upload, no network connection required.
Images, audio, video, documents, archives and eBooks — all converted natively, right on your Mac.
Pick a format you have — see everything Convertessa can turn it into.
Convert hundreds of files at once with per-type group defaults and individual overrides.
First-class support for HEIC, AVIF and WebP — encode and decode, both ways. Read JPEG XL and a dozen more modern formats too.
Drop files anywhere on the window. Native, instant, and exactly what you’d expect on a Mac.
Dial in compression, resolution and bitrate. Keep originals pristine or shrink for sharing.
Never overwrite a file by accident. Convertessa appends safe suffixes automatically.
Every job is logged locally. Re-run a previous conversion or revisit recent outputs in a click.
Bundle your converted files straight into a single ZIP, TAR or 7z — packaged and ready to share the moment a job finishes.
Right-click any file in Finder and choose Convert. A Quick Action handles it on the spot — no need to open the app first.
Shrink Convertessa to a tidy mini window that tucks into a corner — just a drop zone and a format picker for quick, one-off conversions.
No cloud. No account. No upload. Every conversion happens entirely on-device, using the power already in your Mac. What you convert is nobody’s business but yours.
Script conversions, wire them into your build, or batch a folder from the terminal. The same engine, no GUI required.
Read the full CLI documentation →Shrink Convertessa down to a small, focused window — drop, convert, done, with your recent conversions one click away.
macOS 14+ · Apple Silicon & Intel
New formats, new features, and fixes — every release, on the record.
Convertessa maps the most common RTF structures: headings (h1–h6), bold, italic, unordered and ordered lists, and inline links. Formatting with no Textile equivalent—such as custom fonts or page margins—is dropped cleanly without breaking the output.
Yes. Pass a folder path on the command line (convertessa ./docs --to textile) or drag a folder into the app window. Convertessa processes every RTF file inside and writes a matching .textile file next to each original.